Sorry for your losses
I don’t have a lot of input other then how long has it been since the pen had a proper clean ? Have you thrown away the mouse poo bag of feed so they aren’t eating it ?
I hope you are able to narrow it down so you can save your flock
I don’t have a lot of input other then how long has it been since the pen had a proper clean ? Have you thrown away the mouse poo bag of feed so they aren’t eating it ?
I hope you are able to narrow it down so you can save your flock